The Microsoft .NET Framework 3.0 SP1 was released to address a number of issues that customers were having with the Microsoft .NET Framework software package. The problems that 3.0 SP1 fixes include error messages when creating documents, numerous issues with Workflow Foundation, memory leaks while sending messages, slow performance, nonworking applications, and errors in peer channel connections. This release also provides security and feature support for Microsoft .NET Framework 3.5.